Using C-13 isotopes to explore denitrification-dependent anaerobic methane oxidation in a paddy-peatland
Shi, Y; Wang, ZQ; He, CG; Zhang, XY; Sheng, LX; Ren, XD
2017
Source PublicationSCIENTIFIC REPORTS
ISSN2045-2322
Volume7Pages:-
AbstractPeatlands are organic-matter-rich but nitrogen-limited natural systems, the carbon/nitrogen (C/N) status of which are subject to increasing exposure from long-term nitrate (NO3-) fertilizer inputs and atmospheric nitrogen (N) deposits. To manage and protect these unique environments, an improved understanding of denitrification-dependent anaerobic oxidation of methane (DAMO) in peatlands is needed. In this study, we used stable isotope measurements and incubation with NO3- additions to facilitate an investigation and comparison of the potential DAMO rates in a paddy-peatland that has been influenced by N fertilizer over 40 years and an undisturbed peatland in northeast China. Monitoring of (CO2)-C-13 production confimed DAMO did occur in both the paddy-peatland and the undisturbed peatland, the rates of which increased with NO3- additions, but decreased logarithmically with time. When NO3- was added, there were no significant differences between the CH4 oxidation in the paddy-peatland and peatland samples after 36 hours of incubation (97.08 vs. 143.69 nmol g(-1) dry peat) and the potential DAMO rate after incubation for 1 hour (92.53 vs. 69.99 nmol g(-1) h(-1)). These results indicate that the occurrence of DAMO in peatlands might be controlled by the amount of NO3 applied and the depth to which it penetrates into the anoxic layer.
SubtypeJournal
Subject AreaScience & Technology - Other Topics
WOS Subject ExtendedMultidisciplinary Sciences
WOS KeywordOXIDIZING BACTERIA ; AMMONIA OXIDATION ; SOIL ; ARCHAEA ; BOREAL ; RATES ; SINK
Indexed BySCI
Language英语
WOS IDWOS:000392187900001
PublisherNATURE PUBLISHING GROUP
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/44113
Collection生态系统网络观测与模拟院重点实验室_生态网络实验室
Recommended Citation
GB/T 7714
Shi, Y,Wang, ZQ,He, CG,et al. Using C-13 isotopes to explore denitrification-dependent anaerobic methane oxidation in a paddy-peatland[J]. SCIENTIFIC REPORTS,2017,7:-.
APA Shi, Y,Wang, ZQ,He, CG,Zhang, XY,Sheng, LX,&Ren, XD.(2017).Using C-13 isotopes to explore denitrification-dependent anaerobic methane oxidation in a paddy-peatland.SCIENTIFIC REPORTS,7,-.
MLA Shi, Y,et al."Using C-13 isotopes to explore denitrification-dependent anaerobic methane oxidation in a paddy-peatland".SCIENTIFIC REPORTS 7(2017):-.
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